Fig. 5. IRF activation induced by hMPV infection in A549 cells.
(A). Nuclear extracts were prepared from A549 cells control and infected with hMPV, MOI of 3, for 6, 12, 24 and 48 h and used for binding to the RANTES ISRE probe in EMSA. Shown is the inducible nucleoprotein complex formed on the probe in response to the infection. UV indicates UV-inactivated virus. (B) Western blot of IRF-1,-3, and -7 in A549 cells infected with hMPV. Nuclear proteins were prepared from control and A549 cells infected for various length of time, fractionated on a 10% SDS-PAGE, transferred to PVDF membranes and probed with the appropriate antibody. Lamin b was used as an internal control to determine equal loading of the samples.